Hi Konrad,
Thanks for your feedback on h5diff tool!
About your feature request, we actually have a plan to come up with an
option (eg, --common-obj-only).
With the option h5diff will only compares same named objects in both
files. It sounds same as now, but the exit code also will be resulted
only within the common objects.
About the visual output, I understand some more information in a certain
cases like this could be helpful.
We will need to discuss and see how we can improve it.
Until then, we recommend for user to check both visual output (-r or -v
option) and exit code to determine the status result.
Thank you!
- HDF5 tool team
On 4/21/2011 9:38 AM, Konrad Hinsen wrote:
I have just been bitten by an unexpected behavior of h5diff, which I think
should be fixed, although it corresponds to what the documentation says.
I used a plain "h5diff file1 file2" to check if my test runs were producing the
expected results. Getting no output made me believe everything was fine. In reality,
file2 contained nothing at all!
The documented behavior of h5diff is in fact to compare only datasets that exist in both
input files. However, h5diff does consider missing datasets to be a difference, since it
returns the exit code 1 meaning "data differs".
It seems that even with additional options, there is no way to simply check if two files
have identical contents and get a succinct information about the differences. The exit
code (a bit messy to check) just says "equal or not". The only way to get
information about missing datasets is the -v option which also produces tons of output.
So here comes my feature request:
a) Ideal version: make h5diff report datasets that exist only in one dataset by
default.
b) If such a change of the documented behavior is not acceptable, provide a
simple command line option to get the same result.
Konrad.
--
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Konrad Hinsen
Centre de Biophysique Moléculaire, CNRS Orléans
Synchrotron Soleil - Division Expériences
Saint Aubin - BP 48
91192 Gif sur Yvette Cedex, France
Tel. +33-1 69 35 97 15
E-Mail: research AT khinsen DOT fastmail DOT net
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